Drinking mug



FIG. 1 is a front isometric view of a drinking mug of the present invention;

FIG. 2 is front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is back side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof showing the location of unclaimed structure in broken lines that partially obscure the view; and,

FIG. 8 is a bottom view like FIG. 7 in which the broken lines have been removed for clarity.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a drinking mug, as shown and described. 